40001818404 has 24 divisors (see below), whose sum is σ = 93501055648. Its totient is φ = 13310585280.

The previous prime is 40001818379. The next prime is 40001818411. The reversal of 40001818404 is 40481810004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2912137 + ... + 2925840.

Almost surely, 2^40001818404 is an apocalyptic number.

It is an amenable number.

40001818404 is an abundant number, since it is smaller than the sum of its proper divisors (53499237244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40001818404 is a wasteful number, since it uses less digits than its factorization.

40001818404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838555 (or 5838553 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The spelling of 40001818404 in words is "forty billion, one million, eight hundred eighteen thousand, four hundred four".